Paper-bag machine.



Patented Aug. s, 189s.

C. V. CRIST G. M. SCHEHGK.

PAPER BAG MACHINE.

(Application filed Apr. 3, 1899.)

3 Sheets-Sheet l.

(No Model.)

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Witnesses: i l

v Inventors- Attorney A l, G

No. 629,986. Patented Aug. I, |399. C. V. CRIST 8v. M. SCHENCK.

PAPER BAG MACHINE.

(Application led. Apr. 3, 1899.) 4

3 Silente-Sheet. 2.

(No Medef.)

MM .Vul WAHM@ Witnesses: l Invetors (gm 4a/7. E11/mm w. u,

Atterney Patented' Aug. i, |899.

C. V. CRlST &. M. SCHENCK.

PAPER BAG MACHINE.

(Application filed Apr. 3, 1899.) (llo Model.) 3 Sheets-Shen 3.

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Attorney W tnesses: di v y l (.4

Y Naines PETER: co.. rum-out UNITEDV STATES PATENT OEEicE.

CHARLES V. CRST, OF CINClNNATL-AND MURRAY SOHENOK, OFllllDDLE- TOWN, OHIO, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE UNION BAG AND PAPER COMPANY, OF CHICAGO, lLLlNOlS.

PAPER-BAG MACHlNE.

SPECIFICATION forming part of Letters Patent No. 629,986, dated August 1, 1899.

l Application filed April 3, 1899. Serial No. 711,529. ille modeli)` To all whom t may concern:

Be it known that We, CHARLES V. CRIST, of Cincinnati, Hamilton county, and MURRAY SCHENCK, of Middletown, -Butler county,

Ohio, have invented certain new and useful Improvements in Paper-Bag Machines, (Case 1),) of which the following is a specication.

This invention pertains to improvements in paper-bag machines designed to deal with a;

ro bellows-folded paper tube and produce diamond-fold bottornformations to the bag-scctions, the improvement relating particularly to the diamond-folder.

lThe improvement will be readily underr5 stood from the following description taken in connection with the accompanying drawings, in Which- Figure l is a plan of diagrammatic character, showing the bellows-fold tube of the bagzo sections just before being attacked by our improved folder, just after the folder has engaged the tube, and again after the folder has completed its Work and is ready for retreat; Fig. 2, aface elevation of a portion of the carrying-cylinder with a folder, certain xed parts carried by the frame of the machine appearing in vertical section in the plane of line aof Fig. 3; Fig. 3, a plan of the parts seen in Fig. 2, the pick-up roll and also the folding- 3o blades being omitted; Fig. Ll, a perspective view of one of the folders, the movable folding-blade 17 appearing in normal initial position; and Fig. 5, a perspective view of one of the folders, showing the folding-blade 17 as 3 5 having left its normal position and turned about .half-Way through its .folding motion.

In practice the bellows-folded paper tube Will be properly carried upon the periphery of a rotary carrying-cylinder about as Wide 4o as the tube, each side of'- the cylinder being armed with our improved folders, which attack the edges of the'tube and form the bottorn. As the folders at Ythe opposite edges'of the tube are alike, We confine theshowing to a single one.

In the drawings, 1 indicates the bellowsfolded paper tube y2, cross-cuts therein dividing the tube into sections of bag-stock length, these cuts completely severing 'the tube except as to the central portion of the 5o lower ply, which remains to connect the bagsections in series until the ultimate folding of the iiaps necessitates the severing of these Aconnecting portions; 3, the condition of the ladvancing.or bottom end of a bag-section pre- 5 5 -vious to being engaged by the folders, folding mechanism being shown, as before stated, lupon one edge only of the tube; Il, the condin tion after the folders have engaged the tube ready for the performance of the folding op- 6o eration; 5, the condition after the folders have performed their folding operation on the bagsection andV the folders are ready to withdraw to the idle position indicated at 3; 6, the carrying-cylinder to hold and carry forward the bag-sections, this cylinder being assumed as turning to the right; 7, a bracket secured to and projecting from the cylindersornewhat to the vrear of the plane of the cross-cuts 2 of the tube carried by the cylinder; 8, a carriage slid- 7c ing in bracket '7 to and from the edge of the cylinder; 9, a pick-up roll bearing upon the paper tube and having a spur adapted to engage and pick up the advancing liap ofeach successive bag-section asvit passes under the roll; l0,

iixed frame parts; 11, a fixed cam adapted as bracket 7 passes it to push carriage 8 inwardly toward the edge of the cylinder; 12, a pin or roller projecting from carriage 8 and adapted to engage cam l1 and serve as the 8o means through which the cam pushes the carriage inwardly; 13, a fixed cam Vin angular advance of cam 11 and adapted to have its outer surface engaged by roller 12 as it passes this cam, `ivhereby carriage 8 will kbe drawn 85 to its outer position; 14, a spindle journaled in carriage 8 and 'proj ecting outwardly from the cylinder, the axis of this spindle lying substantially in line with the peripheryof carrying-cylinder G; 15, a flat linger secured 9o to carriage 8 and projecting toward the cylinder and adapted when the carriage moves inwardly to pass above the paper tube, as at 4, the forward edge of this finger being parallel with spindle 1i and coinciding'with the '95 central transverse folding-line of the diamond fold of the bag-bottom, the rear edge of ythe finger being angular and the free end of the finger` being nearly pointed; 16, a second pointed fingeron carriage S, being in one piece with finger 15, if desired, this finger 16 being in position to enter between the bellows folds of the tube, the front edge of this finger 16 being beveled to correspond with the forward one of the inner angular folds of the diamond fold, as seen at 5, the form of the rear edge of this finger being immaterial so long as it clears the forward edge of finger 15 sufficient-ly to make room for the transverse fold of the diamond; 17, a pointed fiat linger fast upon spindle 14 and normally lying on top of finger 16, with its forward edge, when in such position, corresponding with the forward edge of finger 16, the rear edge of this finger 17 being preferably so recessed as to lie rearwardly beyond finger 15 when finger 17 is turned down to the left, as at 5, under which conditions fingers 15 and 17 lie substantially in the same plane; 18, a pair of detent-springs carried by carriage 8 and engaged by finger 17 when that finger is turned fiat down to the right, as at 3, or flat down to the left, as at 5, the object of' these springs being to prevent the accidental displacement of finger 17 from either of its eX treme positions; 19, a starwheel on the outer end of spindle 14; 20, a pair of fixed pins supported by the framing and adapted to be engaged at proper time by star-wheel19 and give to the star-wheel a halfrevolution when carriage 8 occupies its inner position, these pins engaging the star-wheel above spindle 14, so as to cause finger 17 to turn over to the left; 21, a similar pair 'of fixed pins in advance of pins 2O and adapted .to engage star-wheel 19 below spindle 14 and cause finger 17 to turn over to the right; 22, ar pivoted hooking-finger mounted on the carrying-cylinder 6 and adapted when the finger moves inwardly, as at 4, to swing over the surface of the tube and enter below the upper flap of the diamond and down against the lower ply of the tube, with the face of its hook coinciding with the extreme forward angle of the diamond fold, as at 5; 23, the spindle of finger 22, the same being journaled in a bearing mounted on the rim of the carrying-cylinder, the axis of this spindle being somewhat inclined to the radius of the cylinder, so that as the finger swings inwardly its hook approaches the periphery of the cylinder; 24, a star-wheel on the lower end of' spindle 23; 25, a pair of fixed pins supported by the framing and adapted to engage at proper time with star-wheel 24 inwardly beyond its axis, so as to cause finger 22 to swing inwardly; 26, a similar pair of fixed fingers to engage star-wheel 24 outwardly beyond its axis and cause finger 22 to swing outwardly; 27, a nipper pivoted on one face of finger 17 and adapted to lie over all the folds of the bellows folds when fingers 16 and 17 go to the position indicated at 4; 28, a spring tending to holdnipper 27 in gripping position against finger 17; 29, anarm projecting upwardly from nipper 27; 30, a projection carried rigidly by bracket 7 forward of thc upper end of arm 29 and adapted as the carriage moves toward the cylinder to arrest the upper end of arm 29 and cause that arm to flex rearwardly and pass under projection 30, whereby nipper 27 is opened, the parts being so arranged that when finger 17 turns over to the left then arm 29 comes out from under projection 30 and allows nipper 27 to go to clamping position; 31, a pin projecting from arm 29; and 32, a projection carried rigidly by bracket 7 atthe left of the folder and adapted to be engaged by pin31,when finger 17 is folded over to the left, this engagement resulting in the opening of nipper27, the relation of parts being such that projection 30 in no wise interferes with .the inward and outward passage of pin 3l.

Normally the folder parts have the position indicated at 3, free from engaging with the tube and being carried forward with the tube by the carrying-cylinder on which the folder parts are mounted. As the forward end of a bag-section passes under pick-up roll 9, its spur lifts the upper ply of the bag-bottom, thus somewhat opening the bellows folds j ust in advance of the roll, the pick-up roll later discharging the picked-u p flap. While thebel lows fold is thus opened, the roller 12 reaches cam 11, whereupon the carriage moves inwardly, finger 15 moving above allot` the plies of the tube, while finger 16 and lthe then-superposed finger 17 enters the bellows fold, as at 4. As the carriage vmoves inwardly, the arm 29 strikes projection 30, thus opening nipper 27, so that it can go above all the bellows folds, as at 4. At or near the same time pins 25 are reached by star-wheel 24, causing finger 22 to go to the position shown at 4. Starwheel 19 having gone inward with the carriage now advances to pins 20, which pins give the star-wheel'and spindle a half-turn, resulting in finger 17 being turned over to the left, as shown at 5, the result of this turning of the finger being the formation of the diamond fold whose prow fold is retained by finger 22. As finger 17 starts to turn over to the left, arm 29 disengages from under projection 30, thus allowing spring 28 to close nipper 27 against the plies of the diamond fold caught between the nipper and finger 17. When finger 17 reaches its position at the left, then pin 31 strikes projection 32, thus opening nipper 27 to permit of the withdrawal of the carriage aud-'all of the fingers. The diamond fold having been completed and made ready for subsequent operations of pasting and flap-folding, pins 26 restore finger 22 to normal idle position and cam 13 withdraws the carriage and its three fingers to normal idle position, after which pins 21 cause the turning of finger 17 back to the right.

Inpractice the circumference of the carrying-cylinder will correspond with a multiple of bag-stock lengths, and the cylinder will be armed with a correspondingnumber ot' sets of the folding appliances, whereby as each bag-section passes the cams and pins the IOO IIO

diamond fold will be formed upon that baglows fold, a carrier for carrying ihejbag-secsection.

We claim as our inventionl. In a paper-bag folder for use with bellows-folded bag-sections, the combination,

substantially` as set forth, of a fiat finger adapted to engage over all of the plies of the bellows fold and having its forward edge at j right angles to the edge of the bag-section, a

portion beveled in correspondence with thev bevel of the second linger, and mechanism for turning said spindle and for moving said spindle and fingers to and from the edge of the bag-section.

2. In a paper-bag folder for use with bellows-folded bag-sections, the combination, substantially as set forth, of a iiat iinger adapted to engage over all of the plies of the bellows fold and having its forward edge at right angles to the edge of the bag-section, a4

second flat finger in advance of the firstmentioned linger and adapted to engage Within the bellows fold of the bag-section and having its forward edge beveled, a spindle having its axis parallel with the forward edge of the first-mentioned finger, a third linger mounted on said spindle and adapt-ed to be turned thereby to the front or to. the rear of the forward edge of the first-mentioned finger and having its forward outer portion beveled in correspondence with the bevel of the second finger, a carrier to advance the bag-section, a guideway mounted on said Vcarrier parallel with said spindle, a carriage sliding in said guideway and having said spindle journaled in it, a pair of iiXed cams adapt-ed to operate upon said carrier and move it toward and from the edge of the carrier, a star-wheel on the spindle, and fixed pins adapted to engage the star-wheel and give the spindle a half-turn in one direction and then a half-turn in the other direction.

3. In a paper-bag folder for use with bellows-folded bag-sections, the combination, substanti ally as set forth, with folding-fingers adapted to engage the bag-section at the bellows fold, of a hooked flat finger pivoted in advance of said folding-fingers and adapted to swing its hook-within the bag-section over the lower ply thereof, and 'mechanism for swinging said hooked finger to and from the forward end of the bag-section.

et. In a paper-bag folder for use with bellows-folded bag-sections, the combination, substantiallyas set forth, with folding-iingers adapted to engage the bag-section at the beltion and said folding-fingers, a spindle mounted upon the edge of the carrier in advance of said folding-fingers and having its axis inclined with reference to the face of the carrier, a hooked fiat finger mounted on said spindle and adapted to swing inwardly over the carrier and rearwardly over the lower ply of the forward end of the bag-secti on, astarwheel on said spindle, and a series of fixed pins adapted to engage said star-wheel and turn said hooked finger into and out of active position. n

5. In a paper-bag machine, the combination, substantially as set forth, of a carryingcylinder, a guide-bracket on the edge thereof, a carriage adapted to slide in said bracket, a flat finger mounted on said carriage and adapted to lie over the face of the cylinder and having its forward edge at, right angles to the edge of the cylinder, a second fiat finger mounted on said carriage in advance of the iirst nger and having its forward edge beveled, a spindle mounted in said carriage, a third fiat linger attached to said spindle and adapted to be turned therebyv into the plane of either of the other iin gers and having its outer portion beveled, a star-wheel on said spindle, fixed pins adapted to be engaged by said star-wheel, aspindle mounted at the edge of the cylinder in advance of said bracket and with its axis inclined to the radius ofthe cylinder, a star-wheel on saidlast-mentioned spindle, a hooked fiat finger on said last-men- IDO tioned spindle, a series of iixed pins adapted to engage said last-mentioned star-wheel, and a pair of fixed cams adapted to move said carriage to and from the edge of the cylinder 6. The combination, substantially as set forth, of a carriage adapted for movement toward and from a bellows-folded paper-bag sec-- tion, a pair of fiat fingers mounted thereon in a common plane and adapted to engage the edge of the bag-section, the forward edge of one finger being parallel to the path of moveinent of said carriage while the forward edge of the other linger is at an angle thereto, a spindle mounted in said carriage with its axis parallel with the path of movement of said carriage, a third fiat finger mounted on said spindle and adapted to be turned thereby into the plane of the other fingers and having its outer edge beveled, and a retaining-spring mounted on said carriage and adapted to be engaged by the third iinger'when the third finger is folded into the plane of the other fingers, and mechanism for sliding the oarriage and turning the spindle.

7. In a paper-bag folder for use with bellows-folded bag-sections, the combination, substantially as set forth, of a iiat .finger adapted to engage over all of the plies of the bellows fold and having its forward edge at right angles to the edge of the bag-section, a second iiat finger in advance of the first-mentioned finger and adapted to engage Within I'Io the bellows fold of the bag-section and havthird finger, and mechanism for moving` said ing its forward edge beveled, a spindle havspindle and fingers and nipper.

ing its axis parallel with the forwm-'d edge of CHARLES V. CRIST.

the rstmentioned finger, a third finger MURRAY SCHENCK. 5 mounted on said spindle and adapted to be Witnesses as to Crist.:

turned thereby to the front or to the rear of AXEL. N. BRUZELIUS,

the forward edge of the rst-menLioned fin- VICTOR H. KNAPP.

ger and having its forward outer portion bev Witnesses as to Sehenek:

eled in correspondence with the bevel of the l E. R. SHIPLEY,

1o second finger, a spring-nippel pivoted to the l M. S. BELDEN. 

